Keratex Hoof Hardener strengthens poor quality hoof walls so that shoes stay on tight. It allows lightly worked horses to remain sound without shoes. It is ideal for use on hooves with poor quality horn causing premature shoe loss, lightly worked hoses, ponies, and donkeys which are left unshod, horses roughed off out of season, and Brood Mares, Foals, and Yearlings. It works well on soft soles prone to brusing. Keratex Hoof Hardener does not produce any surface coating, thereby allowing the hoof to breathe and function naturally. It works by improving and strengthening the molecular structure of hoofwall horn and soles.